Search Results for author: Han Wang

Found 72 papers, 28 papers with code

Incorporating Instructional Prompts into a Unified Generative Framework for Joint Multiple Intent Detection and Slot Filling

1 code implementation COLING 2022 Yangjun Wu, Han Wang, Dongxiang Zhang, Gang Chen, Hao Zhang

Specifically, we design 5-type templates as instructional prompts, and each template includes a question that acts as the driver to teach UGEN to grasp the paradigm, options that list the candidate intents or slots to reduce the answer search space, and the context denotes original utterance.

Intent Detection Question Answering +3

Personalized Entity Resolution with Dynamic Heterogeneous KnowledgeGraph Representations

no code implementations ACL (ECNLP) 2021 Ying Lin, Han Wang, Jiangning Chen, Tong Wang, Yue Liu, Heng Ji, Yang Liu, Premkumar Natarajan

We first build a cross-source heterogeneous knowledge graph from customer purchase history and product knowledge graph to jointly learn customer and product embeddings.

Entity Resolution

Distributed Control Design and Safety Verification for Multi-Agent Systems

no code implementations22 Mar 2023 Han Wang, Antonis Papachristodoulou, Kostas Margellos

We propose distributed iterative algorithms for safe control design and safety verification for networked multi-agent systems.

Continuous Control

The In-Sample Softmax for Offline Reinforcement Learning

1 code implementation28 Feb 2023 Chenjun Xiao, Han Wang, Yangchen Pan, Adam White, Martha White

We highlight a simple fact: it is more straightforward to approximate an in-sample \emph{softmax} using only actions in the dataset.

Offline RL reinforcement-learning +1

The Cognitive Load of Observation Tasks in 3D Video is Lower Than That in 2D Video

no code implementations25 Feb 2023 Yunpeng Yin, Jinglin Sun, Yu Liu, Han Wang, Peiguang Jing

The results showed that 3D videos that required subjects to perform simple tasks brought higher cognitive load to most subjects.

Electroencephalogram (EEG) Experimental Design

Cooperative Driving for Speed Harmonization in Mixed-Traffic Environments

no code implementations15 Feb 2023 Zhe Fu, Abdul Rahman Kreidieh, Han Wang, Jonathan W. Lee, Maria Laura Delle Monache, Alexandre M. Bayen

Autonomous driving systems present promising methods for congestion mitigation in mixed autonomy traffic control settings.

Autonomous Driving

Federated Temporal Difference Learning with Linear Function Approximation under Environmental Heterogeneity

no code implementations4 Feb 2023 Han Wang, Aritra Mitra, Hamed Hassani, George J. Pappas, James Anderson

We initiate the study of federated reinforcement learning under environmental heterogeneity by considering a policy evaluation problem.

Avoiding Model Estimation in Robust Markov Decision Processes with a Generative Model

no code implementations2 Feb 2023 Wenhao Yang, Han Wang, Tadashi Kozuno, Scott M. Jordan, Zhihua Zhang

To remove the need for an oracle, we first transform the original robust MDPs into an alternative form, as the alternative form allows us to use stochastic gradient methods to solve the robust MDPs.

GWRBoost:A geographically weighted gradient boosting method for explainable quantification of spatially-varying relationships

no code implementations12 Dec 2022 Han Wang, Zhou Huang, Ganmin Yin, Yi Bao, Xiao Zhou, Yong Gao

The geographically weighted regression (GWR) is an essential tool for estimating the spatial variation of relationships between dependent and independent variables in geographical contexts.

regression

FedSysID: A Federated Approach to Sample-Efficient System Identification

1 code implementation25 Nov 2022 Han Wang, Leonardo F. Toso, James Anderson

We study the problem of learning a linear system model from the observations of $M$ clients.

Federated Learning

BLOOM: A 176B-Parameter Open-Access Multilingual Language Model

2 code implementations9 Nov 2022 BigScience Workshop, :, Teven Le Scao, Angela Fan, Christopher Akiki, Ellie Pavlick, Suzana Ilić, Daniel Hesslow, Roman Castagné, Alexandra Sasha Luccioni, François Yvon, Matthias Gallé, Jonathan Tow, Alexander M. Rush, Stella Biderman, Albert Webson, Pawan Sasanka Ammanamanchi, Thomas Wang, Benoît Sagot, Niklas Muennighoff, Albert Villanova del Moral, Olatunji Ruwase, Rachel Bawden, Stas Bekman, Angelina McMillan-Major, Iz Beltagy, Huu Nguyen, Lucile Saulnier, Samson Tan, Pedro Ortiz Suarez, Victor Sanh, Hugo Laurençon, Yacine Jernite, Julien Launay, Margaret Mitchell, Colin Raffel, Aaron Gokaslan, Adi Simhi, Aitor Soroa, Alham Fikri Aji, Amit Alfassy, Anna Rogers, Ariel Kreisberg Nitzav, Canwen Xu, Chenghao Mou, Chris Emezue, Christopher Klamm, Colin Leong, Daniel van Strien, David Ifeoluwa Adelani, Dragomir Radev, Eduardo González Ponferrada, Efrat Levkovizh, Ethan Kim, Eyal Bar Natan, Francesco De Toni, Gérard Dupont, Germán Kruszewski, Giada Pistilli, Hady Elsahar, Hamza Benyamina, Hieu Tran, Ian Yu, Idris Abdulmumin, Isaac Johnson, Itziar Gonzalez-Dios, Javier de la Rosa, Jenny Chim, Jesse Dodge, Jian Zhu, Jonathan Chang, Jörg Frohberg, Joseph Tobing, Joydeep Bhattacharjee, Khalid Almubarak, Kimbo Chen, Kyle Lo, Leandro von Werra, Leon Weber, Long Phan, Loubna Ben allal, Ludovic Tanguy, Manan Dey, Manuel Romero Muñoz, Maraim Masoud, María Grandury, Mario Šaško, Max Huang, Maximin Coavoux, Mayank Singh, Mike Tian-Jian Jiang, Minh Chien Vu, Mohammad A. Jauhar, Mustafa Ghaleb, Nishant Subramani, Nora Kassner, Nurulaqilla Khamis, Olivier Nguyen, Omar Espejel, Ona de Gibert, Paulo Villegas, Peter Henderson, Pierre Colombo, Priscilla Amuok, Quentin Lhoest, Rheza Harliman, Rishi Bommasani, Roberto Luis López, Rui Ribeiro, Salomey Osei, Sampo Pyysalo, Sebastian Nagel, Shamik Bose, Shamsuddeen Hassan Muhammad, Shanya Sharma, Shayne Longpre, Somaieh Nikpoor, Stanislav Silberberg, Suhas Pai, Sydney Zink, Tiago Timponi Torrent, Timo Schick, Tristan Thrush, Valentin Danchev, Vassilina Nikoulina, Veronika Laippala, Violette Lepercq, Vrinda Prabhu, Zaid Alyafeai, Zeerak Talat, Arun Raja, Benjamin Heinzerling, Chenglei Si, Davut Emre Taşar, Elizabeth Salesky, Sabrina J. Mielke, Wilson Y. Lee, Abheesht Sharma, Andrea Santilli, Antoine Chaffin, Arnaud Stiegler, Debajyoti Datta, Eliza Szczechla, Gunjan Chhablani, Han Wang, Harshit Pandey, Hendrik Strobelt, Jason Alan Fries, Jos Rozen, Leo Gao, Lintang Sutawika, M Saiful Bari, Maged S. Al-shaibani, Matteo Manica, Nihal Nayak, Ryan Teehan, Samuel Albanie, Sheng Shen, Srulik Ben-David, Stephen H. Bach, Taewoon Kim, Tali Bers, Thibault Fevry, Trishala Neeraj, Urmish Thakker, Vikas Raunak, Xiangru Tang, Zheng-Xin Yong, Zhiqing Sun, Shaked Brody, Yallow Uri, Hadar Tojarieh, Adam Roberts, Hyung Won Chung, Jaesung Tae, Jason Phang, Ofir Press, Conglong Li, Deepak Narayanan, Hatim Bourfoune, Jared Casper, Jeff Rasley, Max Ryabinin, Mayank Mishra, Minjia Zhang, Mohammad Shoeybi, Myriam Peyrounette, Nicolas Patry, Nouamane Tazi, Omar Sanseviero, Patrick von Platen, Pierre Cornette, Pierre François Lavallée, Rémi Lacroix, Samyam Rajbhandari, Sanchit Gandhi, Shaden Smith, Stéphane Requena, Suraj Patil, Tim Dettmers, Ahmed Baruwa, Amanpreet Singh, Anastasia Cheveleva, Anne-Laure Ligozat, Arjun Subramonian, Aurélie Névéol, Charles Lovering, Dan Garrette, Deepak Tunuguntla, Ehud Reiter, Ekaterina Taktasheva, Ekaterina Voloshina, Eli Bogdanov, Genta Indra Winata, Hailey Schoelkopf, Jan-Christoph Kalo, Jekaterina Novikova, Jessica Zosa Forde, Jordan Clive, Jungo Kasai, Ken Kawamura, Liam Hazan, Marine Carpuat, Miruna Clinciu, Najoung Kim, Newton Cheng, Oleg Serikov, Omer Antverg, Oskar van der Wal, Rui Zhang, Ruochen Zhang, Sebastian Gehrmann, Shachar Mirkin, Shani Pais, Tatiana Shavrina, Thomas Scialom, Tian Yun, Tomasz Limisiewicz, Verena Rieser, Vitaly Protasov, Vladislav Mikhailov, Yada Pruksachatkun, Yonatan Belinkov, Zachary Bamberger, Zdeněk Kasner, Alice Rueda, Amanda Pestana, Amir Feizpour, Ammar Khan, Amy Faranak, Ana Santos, Anthony Hevia, Antigona Unldreaj, Arash Aghagol, Arezoo Abdollahi, Aycha Tammour, Azadeh HajiHosseini, Bahareh Behroozi, Benjamin Ajibade, Bharat Saxena, Carlos Muñoz Ferrandis, Danish Contractor, David Lansky, Davis David, Douwe Kiela, Duong A. Nguyen, Edward Tan, Emi Baylor, Ezinwanne Ozoani, Fatima Mirza, Frankline Ononiwu, Habib Rezanejad, Hessie Jones, Indrani Bhattacharya, Irene Solaiman, Irina Sedenko, Isar Nejadgholi, Jesse Passmore, Josh Seltzer, Julio Bonis Sanz, Livia Dutra, Mairon Samagaio, Maraim Elbadri, Margot Mieskes, Marissa Gerchick, Martha Akinlolu, Michael McKenna, Mike Qiu, Muhammed Ghauri, Mykola Burynok, Nafis Abrar, Nazneen Rajani, Nour Elkott, Nour Fahmy, Olanrewaju Samuel, Ran An, Rasmus Kromann, Ryan Hao, Samira Alizadeh, Sarmad Shubber, Silas Wang, Sourav Roy, Sylvain Viguier, Thanh Le, Tobi Oyebade, Trieu Le, Yoyo Yang, Zach Nguyen, Abhinav Ramesh Kashyap, Alfredo Palasciano, Alison Callahan, Anima Shukla, Antonio Miranda-Escalada, Ayush Singh, Benjamin Beilharz, Bo wang, Caio Brito, Chenxi Zhou, Chirag Jain, Chuxin Xu, Clémentine Fourrier, Daniel León Periñán, Daniel Molano, Dian Yu, Enrique Manjavacas, Fabio Barth, Florian Fuhrimann, Gabriel Altay, Giyaseddin Bayrak, Gully Burns, Helena U. Vrabec, Imane Bello, Ishani Dash, Jihyun Kang, John Giorgi, Jonas Golde, Jose David Posada, Karthik Rangasai Sivaraman, Lokesh Bulchandani, Lu Liu, Luisa Shinzato, Madeleine Hahn de Bykhovetz, Maiko Takeuchi, Marc Pàmies, Maria A Castillo, Marianna Nezhurina, Mario Sänger, Matthias Samwald, Michael Cullan, Michael Weinberg, Michiel De Wolf, Mina Mihaljcic, Minna Liu, Moritz Freidank, Myungsun Kang, Natasha Seelam, Nathan Dahlberg, Nicholas Michio Broad, Nikolaus Muellner, Pascale Fung, Patrick Haller, Ramya Chandrasekhar, Renata Eisenberg, Robert Martin, Rodrigo Canalli, Rosaline Su, Ruisi Su, Samuel Cahyawijaya, Samuele Garda, Shlok S Deshmukh, Shubhanshu Mishra, Sid Kiblawi, Simon Ott, Sinee Sang-aroonsiri, Srishti Kumar, Stefan Schweter, Sushil Bharati, Tanmay Laud, Théo Gigant, Tomoya Kainuma, Wojciech Kusa, Yanis Labrak, Yash Shailesh Bajaj, Yash Venkatraman, Yifan Xu, Yingxin Xu, Yu Xu, Zhe Tan, Zhongli Xie, Zifan Ye, Mathilde Bras, Younes Belkada, Thomas Wolf

Large language models (LLMs) have been shown to be able to perform new tasks based on a few demonstrations or natural language instructions.

Language Modelling Multilingual NLP

Few-Shot Character Understanding in Movies as an Assessment to Meta-Learning of Theory-of-Mind

1 code implementation9 Nov 2022 Mo Yu, Yisi Sang, Kangsheng Pu, Zekai Wei, Han Wang, Jing Li, Yue Yu, Jie zhou

When reading a story, humans can rapidly understand new fictional characters with a few observations, mainly by drawing analogy to fictional and real people they met before in their lives.

Meta-Learning Metric Learning

Language Model Pre-Training with Sparse Latent Typing

1 code implementation23 Oct 2022 Liliang Ren, Zixuan Zhang, Han Wang, Clare R. Voss, ChengXiang Zhai, Heng Ji

Modern large-scale Pre-trained Language Models (PLMs) have achieved tremendous success on a wide range of downstream tasks.

Ranked #3 on Few-shot NER on Few-NERD (INTRA) (using extra training data)

Few-shot NER Language Modelling

Causal Inference via Nonlinear Variable Decorrelation for Healthcare Applications

no code implementations29 Sep 2022 Junda Wang, Weijian Li, Han Wang, Hanjia Lyu, Caroline Thirukumaran, Addisu Mesfin, Jiebo Luo

Causal inference and model interpretability research are gaining increasing attention, especially in the domains of healthcare and bioinformatics.

Association Causal Inference

A deep variational free energy approach to dense hydrogen

1 code implementation13 Sep 2022 Hao Xie, Zi-Hang Li, Han Wang, Linfeng Zhang, Lei Wang

We present a deep generative model-based variational free energy approach to the equations of state of dense hydrogen.

PTSEFormer: Progressive Temporal-Spatial Enhanced TransFormer Towards Video Object Detection

1 code implementation6 Sep 2022 Han Wang, Jun Tang, Xiaodong Liu, Shanyan Guan, Rong Xie, Li Song

The temporal information is introduced by the temporal feature aggregation model (TFAM), by conducting an attention mechanism between the context frames and the target frame (i. e., the frame to be detected).

object-detection Video Object Detection

DPA-1: Pretraining of Attention-based Deep Potential Model for Molecular Simulation

1 code implementation17 Aug 2022 Duo Zhang, Hangrui Bi, Fu-Zhi Dai, Wanrun Jiang, Linfeng Zhang, Han Wang

Machine learning assisted modeling of the inter-atomic potential energy surface (PES) is revolutionizing the field of molecular simulation.

DPOAD: Differentially Private Outsourcing of Anomaly Detection through Iterative Sensitivity Learning

no code implementations27 Jun 2022 Meisam Mohammady, Han Wang, Lingyu Wang, Mengyuan Zhang, Yosr Jarraya, Suryadipta Majumdar, Makan Pourzandi, Mourad Debbabi, Yuan Hong

Outsourcing anomaly detection to third-parties can allow data owners to overcome resource constraints (e. g., in lightweight IoT devices), facilitate collaborative analysis (e. g., under distributed or multi-party scenarios), and benefit from lower costs and specialized expertise (e. g., of Managed Security Service Providers).

Anomaly Detection

DeePKS+ABACUS as a Bridge between Expensive Quantum Mechanical Models and Machine Learning Potentials

no code implementations21 Jun 2022 Wenfei Li, Qi Ou, Yixiao Chen, Yu Cao, Renxi Liu, Chunyi Zhang, Daye Zheng, Chun Cai, Xifan Wu, Han Wang, Mohan Chen, Linfeng Zhang

However, for high-level QM methods, such as density functional theory (DFT) at the meta-GGA level and/or with exact exchange, quantum Monte Carlo, etc., generating a sufficient amount of data for training a ML potential has remained computationally challenging due to their high cost.

Efficient Neural Network

RVAE-LAMOL: Residual Variational Autoencoder to Enhance Lifelong Language Learning

1 code implementation22 May 2022 Han Wang, Ruiliu Fu, Xuejun Zhang, Jun Zhou

In order to alleviate catastrophic forgetting, we propose the residual variational autoencoder (RVAE) to enhance LAMOL, a recent LLL model, by mapping different tasks into a limited unified semantic space.

SVR-based Observer Design for Unknown Linear Systems: Complexity and Performance

no code implementations14 May 2022 Xuda Ding, Han Wang, Jianping He, Cailian Chen, Xinping Guan

The variances of the estimation error and the fluctuations in performance are smaller with a properly-designed parameter $\gamma$ compared with the OLS methods.

DouFu: A Double Fusion Joint Learning Method For Driving Trajectory Representation

no code implementations5 May 2022 Han Wang, Zhou Huang, Xiao Zhou, Ganmin Yin, Yi Bao, Yi Zhang

The attention fusion module incorporates route features with movement features to create a better spatial-temporal embedding.

Representation Learning

Safety-Aware Optimal Control for Motion Planning with Low Computing Complexity

no code implementations28 Apr 2022 Xuda Ding, Han Wang, Jianping He, Cailian Chen, Kostas Margellos, Antonis Papachristodoulou

Simulations demonstrates that BRSCA has a higher probability of finding feasible solutions, reduces the computation time by about 17. 4% and the energy cost by about four times compared to other methods in the literature.

Motion Planning

Automatic Multi-Label Prompting: Simple and Interpretable Few-Shot Classification

1 code implementation NAACL 2022 Han Wang, Canwen Xu, Julian McAuley

Prompt-based learning (i. e., prompting) is an emerging paradigm for exploiting knowledge learned by a pretrained language model.

Few-Shot Text Classification Language Modelling +2

FedADMM: A Federated Primal-Dual Algorithm Allowing Partial Participation

no code implementations28 Mar 2022 Han Wang, Siddartha Marella, James Anderson

Federated learning is a framework for distributed optimization that places emphasis on communication efficiency.

Distributed Optimization Federated Learning

Learning Linear Models Using Distributed Iterative Hessian Sketching

no code implementations8 Dec 2021 Han Wang, James Anderson

This work considers the problem of learning the Markov parameters of a linear system from observed data.

Decomposing Complex Questions Makes Multi-Hop QA Easier and More Interpretable

1 code implementation Findings (EMNLP) 2021 Ruiliu Fu, Han Wang, Xuejun Zhang, Jun Zhou, Yonghong Yan

The Relation Extractor decomposes the complex question, and then the Reader answers the sub-questions in turn, and finally the Comparator performs numerical comparison and summarizes all to get the final answer, where the entire process itself constitutes a complete reasoning evidence path.

Robust Glare Detection: Review, Analysis, and Dataset Release

no code implementations12 Oct 2021 Mahdi Abolfazli Esfahani, Han Wang

The source of glare is not limited to the sun, and glare can be seen in the images captured during the nighttime and in indoor environments, which is due to the presence of different light sources; reflective surfaces also influence the generation of such artifacts.

Autonomous Vehicles

Greedy-based Value Representation for Efficient Coordination in Multi-agent Reinforcement Learning

no code implementations29 Sep 2021 Lipeng Wan, Zeyang Liu, Xingyu Chen, Han Wang, Xuguang Lan

Due to the representation limitation of the joint Q value function, multi-agent reinforcement learning (MARL) methods with linear or monotonic value decomposition can not ensure the optimal consistency (i. e. the correspondence between the individual greedy actions and the maximal true Q value), leading to instability and poor coordination.

Multi-agent Reinforcement Learning reinforcement-learning +1

Large-Scale System Identification Using a Randomized SVD

no code implementations6 Sep 2021 Han Wang, James Anderson

Learning a dynamical system from input/output data is a fundamental task in the control design pipeline.

Visual Enhanced 3D Point Cloud Reconstruction from A Single Image

no code implementations17 Aug 2021 Guiju Ping, Mahdi Abolfazli Esfahani, Han Wang

Solving the challenging problem of 3D object reconstruction from a single image appropriately gives existing technologies the ability to perform with a single monocular camera rather than requiring depth sensors.

3D Object Reconstruction From A Single Image 3D Point Cloud Reconstruction +1

Optimizing NLU Reranking Using Entity Resolution Signals in Multi-domain Dialog Systems

no code implementations NAACL 2021 Tong Wang, Jiangning Chen, Mohsen Malmir, Shuyan Dong, Xin He, Han Wang, Chengwei Su, Yue Liu, Yang Liu

In dialog systems, the Natural Language Understanding (NLU) component typically makes the interpretation decision (including domain, intent and slots) for an utterance before the mentioned entities are resolved.

Entity Resolution intent-classification +2

Retrieval Enhanced Model for Commonsense Generation

1 code implementation Findings (ACL) 2021 Han Wang, Yang Liu, Chenguang Zhu, Linjun Shou, Ming Gong, Yichong Xu, Michael Zeng

Commonsense generation is a challenging task of generating a plausible sentence describing an everyday scenario using provided concepts.

Retrieval Text Generation

A Novel Binocular Eye-Tracking SystemWith Stereo Stimuli for 3D Gaze Estimation

no code implementations25 Apr 2021 Jinglin Sun, Zhipeng Wu, Han Wang, Peiguang Jing, Yu Liu

However, most current eye trackers focus on 2D point of gaze (PoG) estimation and cannot provide accurate gaze depth. Concerning future applications such as HCI with 3D displays, we propose a novel binocular eye tracking device with stereo stimuli to provide highly accurate 3D PoG estimation.

Depth Estimation Gaze Estimation

Personalized Entity Resolution with Dynamic Heterogeneous Knowledge Graph Representations

no code implementations6 Apr 2021 Ying Lin, Han Wang, Jiangning Chen, Tong Wang, Yue Liu, Heng Ji, Yang Liu, Premkumar Natarajan

For example, with "add milk to my cart", a customer may refer to a certain organic product, while some customers may want to re-order products they regularly purchase.

Entity Resolution

The Phase Diagram of a Deep Potential Water Model

no code implementations9 Feb 2021 Linfeng Zhang, Han Wang, Roberto Car, Weinan E

Using the Deep Potential methodology, we construct a model that reproduces accurately the potential energy surface of the SCAN approximation of density functional theory for water, from low temperature and pressure to about 2400 K and 50 GPa, excluding the vapor stability region.

Chemical Physics

Masked Face Image Classification with Sparse Representation based on Majority Voting Mechanism

no code implementations9 Nov 2020 Han Wang

Sparse approximation is the problem to find the sparsest linear combination for a signal from a redundant dictionary, which is widely applied in signal processing and compressed sensing.

Classification General Classification +1

DeePKS: a comprehensive data-driven approach towards chemically accurate density functional theory

no code implementations1 Aug 2020 Yixiao Chen, Linfeng Zhang, Han Wang, E Weinan

We propose a general machine learning-based framework for building an accurate and widely-applicable energy functional within the framework of generalized Kohn-Sham density functional theory.

BIG-bench Machine Learning

Online Visual Place Recognition via Saliency Re-identification

1 code implementation29 Jul 2020 Han Wang, Chen Wang, Lihua Xie

As an essential component of visual simultaneous localization and mapping (SLAM), place recognition is crucial for robot navigation and autonomous driving.

Autonomous Driving Robot Navigation +3

Deep Potential generation scheme and simulation protocol for the Li10GeP2S12-type superionic conductors

no code implementations5 Jun 2020 Jianxing Huang, Linfeng Zhang, Han Wang, Jinbao Zhao, Jun Cheng, Weinan E

It has been a challenge to accurately simulate Li-ion diffusion processes in battery materials at room temperature using {\it ab initio} molecular dynamics (AIMD) due to its high computational cost.

Computational Physics Materials Science Chemical Physics

SentPWNet: A Unified Sentence Pair Weighting Network for Task-specific Sentence Embedding

no code implementations22 May 2020 Li Zhang, Han Wang, Lingxiao Li

Our model, SentPWNet, exploits the neighboring spatial distribution of each sentence as locality weight to indicate the informative level of sentence pair.

Metric Learning Sentence Embedding +2

Pushing the limit of molecular dynamics with ab initio accuracy to 100 million atoms with machine learning

1 code implementation1 May 2020 Weile Jia, Han Wang, Mohan Chen, Denghui Lu, Lin Lin, Roberto Car, Weinan E, Linfeng Zhang

For 35 years, {\it ab initio} molecular dynamics (AIMD) has been the method of choice for modeling complex atomistic phenomena from first principles.

Computational Physics

Intensity Scan Context: Coding Intensity and Geometry Relations for Loop Closure Detection

1 code implementation12 Mar 2020 Han Wang, Chen Wang, Lihua Xie

Loop closure detection is an essential and challenging problem in simultaneous localization and mapping (SLAM).

Loop Closure Detection Retrieval +1

Fast Loop Closure Detection via Binary Content

no code implementations25 Feb 2020 Han Wang, Juncheng Li, Maopeng Ran, Lihua Xie

Our method is compared with the state-of-the-art loop closure detection methods and the results show that it outperforms the traditional methods at both recall rate and speed.

Image Retrieval Loop Closure Detection +2

DP-GEN: A concurrent learning platform for the generation of reliable deep learning based potential energy models

1 code implementation28 Oct 2019 Yuzhi Zhang, Haidi Wang, WeiJie Chen, Jinzhe Zeng, Linfeng Zhang, Han Wang, Weinan E

Materials 3, 023804] and is capable of generating uniformly accurate deep learning based PES models in a way that minimizes human intervention and the computational cost for data generation and model training.

Computational Physics

VideoDP: A Universal Platform for Video Analytics with Differential Privacy

no code implementations18 Sep 2019 Han Wang, Shangyu Xie, Yuan Hong

In this paper, to the best of our knowledge, we propose the first differentially private video analytics platform (VideoDP) which flexibly supports different video analyses with rigorous privacy guarantee.

Deep neural network for Wannier function centers

no code implementations27 Jun 2019 Linfeng Zhang, Mohan Chen, Xifan Wu, Han Wang, Weinan E, Roberto Car

We introduce a deep neural network (DNN) model that assigns the position of the centers of the electronic charge in each atomic configuration on a molecular dynamics trajectory.

Computational Physics Materials Science Chemical Physics

Machine learning-guided synthesis of advanced inorganic materials

1 code implementation10 May 2019 Bijun Tang, Yuhao Lu, Jiadong Zhou, Han Wang, Prafful Golani, Manzhang Xu, Quan Xu, Cuntai Guan, Zheng Liu

Synthesis of advanced inorganic materials with minimum number of trials is of paramount importance towards the acceleration of inorganic materials development.

BIG-bench Machine Learning

Learning to Decompose Compound Questions with Reinforcement Learning

no code implementations ICLR 2019 Haihong Yang, Han Wang, Shuang Guo, Wei zhang, Huajun Chen

Our model consists of two parts: (i) a novel learning-to-decompose agent that learns a policy to decompose a compound question into simple questions and (ii) three independent simple-question answerers that classify the corresponding relations for each simple question.

Question Answering reinforcement-learning +1

Active Learning of Uniformly Accurate Inter-atomic Potentials for Materials Simulation

no code implementations28 Oct 2018 Linfeng Zhang, De-Ye Lin, Han Wang, Roberto Car, Weinan E

An active learning procedure called Deep Potential Generator (DP-GEN) is proposed for the construction of accurate and transferable machine learning-based models of the potential energy surface (PES) for the molecular modeling of materials.

Active Learning BIG-bench Machine Learning

Learn to Steer through Deep Reinforcement Learning

1 code implementation Sensors 2018 Keyu Wu, Mahdi Abolfazli Esfahani, Shenghai Yuan, Han Wang

It is worth noting that the developed system is readily transferable from virtual training scenarios to real-world deployment without any fine-tuning by utilizing depth images.

reinforcement-learning Reinforcement Learning (RL)

End-to-end Symmetry Preserving Inter-atomic Potential Energy Model for Finite and Extended Systems

1 code implementation NeurIPS 2018 Linfeng Zhang, Jiequn Han, Han Wang, Wissam A. Saidi, Roberto Car, Weinan E

Machine learning models are changing the paradigm of molecular modeling, which is a fundamental tool for material science, chemistry, and computational biology.

Computational Physics Materials Science Chemical Physics

English Out-of-Vocabulary Lexical Evaluation Task

no code implementations11 Apr 2018 Han Wang, Ye Wang, Xinxiang Zhang, Mi Lu, Yoonsuck Choe, Jingjing Cao

Unlike previous unknown nouns tagging task, this is the first attempt to focus on out-of-vocabulary (OOV) lexical evaluation tasks that do not require any prior knowledge.

Classification General Classification

DeePMD-kit: A deep learning package for many-body potential energy representation and molecular dynamics

2 code implementations11 Dec 2017 Han Wang, Linfeng Zhang, Jiequn Han, Weinan E

Here we describe DeePMD-kit, a package written in Python/C++ that has been designed to minimize the effort required to build deep learning based representation of potential energy and force field and to perform molecular dynamics.

Reinforced dynamics for enhanced sampling in large atomic and molecular systems

no code implementations10 Dec 2017 Linfeng Zhang, Han Wang, Weinan E

Like metadynamics, it allows for an efficient exploration of the configuration space by adding an adaptively computed biasing potential to the original dynamics.

Efficient Exploration reinforcement-learning +1

Deep Potential Molecular Dynamics: a scalable model with the accuracy of quantum mechanics

3 code implementations30 Jul 2017 Linfeng Zhang, Jiequn Han, Han Wang, Roberto Car, Weinan E

We introduce a scheme for molecular simulations, the Deep Potential Molecular Dynamics (DeePMD) method, based on a many-body potential and interatomic forces generated by a carefully crafted deep neural network trained with ab initio data.

Detecting facial landmarks in the video based on a hybrid framework

no code implementations21 Sep 2016 Nian Cai, Zhineng Lin, Fu Zhang, Guandong Cen, Han Wang

Finally, the facial landmarks in the current frame are exactly detected from the validated face bounding box via the landmark detector.

Face Detection

Time-domain multiscale shape identification in electro-sensing

no code implementations12 Sep 2014 Habib Ammari, Han Wang

This paper presents premier and innovative time-domain multi-scale method for shape identification in electro-sensing using pulse-type signals.

Wavelet methods for shape perception in electro-sensing

no code implementations10 Oct 2013 Habib Ammari, Stéphane Mallat, Irène Waldspurger, Han Wang

This paper aims at presenting a new approach to the electro-sensing problem using wavelets.

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